Between 1800 and 2025, US consumer prices rose by 1798.8%. That means $20 then had roughly the same buying power as $380 now — an average of 1.32% inflation per year over 225 years.
What $20 in 1800 was worth at each following decade, adjusted for consumer price inflation.
Inflation adjustment uses the ratio of the Consumer Price Index between the two years — the same method the U.S. Bureau of Labor Statistics documents for comparing dollar amounts over time.
The index used is CPI-U (all urban consumers, US city average, all items), base period 1982-1984 = 100. The 2025 figure is the latest annual average available and may be revised by BLS.
Note: other inflation calculators may show slightly different results because some use a specific month rather than the annual average, or a different end year. This page uses annual averages throughout, and states both index values above so the arithmetic can be checked.
$20 in 1800 is equivalent in purchasing power to about $380 in 2025. That is an increase of $360 over 225 years, or a total price rise of 1798.8%.
Prices rose at an average of 1.32% per year between 1800 and 2025. Compounded over 225 years, that turns $20 into $380.
The amount is multiplied by the ratio of the Consumer Price Index in 2025 to the index in 1800: 322.8 divided by 17.0 equals 18.9882. Multiplying $20 by 18.9882 gives $380. The index is the CPI-U published by the U.S. Bureau of Labor Statistics, base period 1982-1984 = 100.
Running the comparison in reverse, $20.00 in 2025 has roughly the same buying power as $1.05 in 1800.
Use the full inflation tool to compare any amount between any two years, or project what today's money will be worth in the future.
